JS code to determine the different versions of IE

Method One:

<script type= "Text/javascript" > var browser=navigator.appname var b_version=navigator.appversion var version=b_ Version.split (";"); var trim_version=version[1].replace (/[]/g, ""); if (browser== "Microsoft Internet Explorer" && trim_version== "MSIE6.0") {alert ("IE 6.0");} else if (browser== " Microsoft Internet Explorer && trim_version== "MSIE7.0") {alert ("IE 7.0"); window.location.href= "http:// Xxxx.com ";} else if (browser== "Microsoft Internet Explorer" && trim_version== "MSIE8.0") {alert ("IE 8.0");} else if (browser== "Microsoft Internet Explorer" && trim_version== "MSIE9.0") {alert ("IE 9.0");} </script>

Method Two:

<script type= "Text/javascript" >if(Navigator.appname = = "Microsoft Internet Explorer" && navigator.appversion split (";") [1].replace (/[]/g, "") = = "MSIE6.0") {alert ("IE 6.0"); } Else if(Navigator.appname = = "Microsoft Internet Explorer" && navigator.appversion split (";") [1].replace (/[]/g, "") = = "MSIE7.0") {alert ("IE 7.0"); } Else if(Navigator.appname = = "Microsoft Internet Explorer" && navigator.appversion split (";") [1].replace (/[]/g, "") = = "MSIE8.0") {alert ("IE 8.0"); } Else if(Navigator.appname = = "Microsoft Internet Explorer" && navigator.appversion split (";") [1].replace (/[]/g, "") = = "MSIE9.0") {alert ("IE 9.0"); } </script>

Method Three:

<script type= "Text/javascript" > if (navigator.appname = = "Microsoft Internet Explorer" && Navigator.appVersion.match (/7./i) = = "7.") {Alert ("IE 7.0");} else if (navigator.appname = = "Microsoft Internet Explorer" && navigator.appVersion.match (/8./i) = = "8.") {Alert ("IE 8.0");} else if (navigator.appname = = "Microsoft Internet Explorer" && navigator.appVersion.match (/9./i) = = "9.") {Alert ("IE 9.0");} else if (navigator.appname = = "Microsoft Internet Explorer") {alert ("IE 6.0");} </script>

　　

JS code to determine the different versions of IE